package com.yc.system.security.security;


import com.yc.system.entity.Role;
import com.yc.system.security.core.entity.SysRoleEntity;
import com.yc.system.security.core.service.SysUserService;
import com.yc.system.security.security.entity.SelfUserEntity;
import com.yc.system.security.security.service.SelfUserDetailsService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.authentication.LockedException;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.stereotype.Component;

import java.util.HashSet;
import java.util.List;
import java.util.Set;

/**
 * 自定义登录验证
 * @author zwq
 * @date 2020-04-04
**/
@Component
public class UserAuthenticationProvider implements AuthenticationProvider {
    @Autowired
    private SelfUserDetailsService selfUserDetailsService;
    @Autowired
    private SysUserService sysUserService;
    @Override
    public Authentication authenticate(Authentication authentication) throws AuthenticationException {
            // 获取表单输入中返回的用户名
            String userName = (String) authentication.getPrincipal();
            // 获取表单中输入的密码
            String password = (String) authentication.getCredentials();
            // 查询用户是否存在
            SelfUserEntity userInfo = selfUserDetailsService.loadUserByUsername(userName);
            if (userInfo == null) {
                throw new UsernameNotFoundException("用户名不存在");
            }
            // 我们还要判断密码是否正确，这里我们的密码使用BCryptPasswordEncoder进行加密的
            if (!new BCryptPasswordEncoder().matches(password, userInfo.getPassword())) {
                throw new BadCredentialsException("密码不正确");
            }
            // 还可以加一些其他信息的判断，比如用户账号已停用等判断
//            if (userInfo.getStatus().equals("PROHIBIT")){
//                throw new LockedException("该用户已被冻结");
//            }
        // 角色集合
        Set<GrantedAuthority> authorities = new HashSet<>();
        // 查询用户角色
        List<Role> sysRoleEntityList = sysUserService.selectSysRoleByUserId(userInfo.getUserId());
        for (Role sysRoleEntity: sysRoleEntityList){
            authorities.add(new SimpleGrantedAuthority("ROLE_" + sysRoleEntity.getRoleName()));
        }
        userInfo.setAuthorities(authorities);
        // 进行登录
        return new UsernamePasswordAuthenticationToken(userInfo, password, authorities);
    }
    @Override
    public boolean supports(Class<?> authentication) {
        return true;
    }
}